A combination lock is a simple and effective way to keep items secure in a locker or other kind of security lockbox. While most combinations are only three digits long, there are a few combination locks that have four digits to make it harder for them to be broken into. To open the lock, you need to know all four digits in order. For the sake of this article, we will be working with a lock that has the combination 4-10-38-40.
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Things you need
- Combination lock
Turn the dial of the lock to 0. This will reset the lock for you to begin entering the combination.
Turn the dial clockwise three full rotations until the 0 is once again at the top of the dial. Continue to turn the dial clockwise until the line is pointing to the number 4. This will enter the first digit of the combination.
Turn the dial counterclockwise two rotations until 0 is once again at the top of the dial. Continue turning the dial counterclockwise until the line is pointing to 10. This will enter the second number of the combination.
Turn the dial clockwise one full rotation until 0 is at the top of the dial. Continue turning the dial clockwise until the line is pointing at the number 38. This will enter the third number of the combination.
Turn the dial counterclockwise until landing at the number 40. This will enter the fourth, and final, number of the combination. After the dial lands on the number 40, the lock will open.
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